Final answer:
Naval Station, Pearl Harbor, located in Hawaii, was attacked by the Japanese and brought the U.S. into WW2.
Step-by-step explanation:
The Naval base that was attacked that brought the U.S. into WW2 was Naval Station, Pearl Harbor.
Pearl Harbor is located on the island of Oahu, Hawaii, which was a U.S. territory at the time of the attack on December 7, 1941. The attack was carried out by the Japanese, leading to the United States' entry into World War II.
This attack on Pearl Harbor was a pivotal event in history and marked the beginning of America's direct involvement in the war.
Learn more about Pearl Harbor attack